The paper describes polyphagous pests, the cabbage moth (Mamestra brassicae) and bright-line brown-eyes moth (Mamestra oleracea), which were not systematically investigated up to now in Slovenia. The cabbage moth, which is more abundant, preferably attacks Brassica plants, and its caterpillars are especially harmful in the cabbage. The paper deals with the morphology, distribution and methods of monitoring the pest populations and discuss on their control. The protection of vegetables from both pests is primarily based on the use of chemical insecticides. However, the use of natural enemies and various agro-technical measures can also be very important in diminishing the populations of the pests. With interlacing of all of these approaches, healthy and quality food can be produced even in the growing seasons with high attack of the pests mentioned. V prispevku sta predstavljena polifagna škodljivca, kapusova sovka (Mamestra brassicae) in zelenjadna sovka (Mamestra oleracea), ki v Sloveniji doslej nista bila načrtneje preučevana. Kapusova sovka, ki se pri nas pojavlja bolj številčno, najraje napada kapusnice, njene gosenice pa se najraje hranijo na zelju. V prispevku predstavljamo morfologijo, razširjenost, način spremljanja sezonske dinamike vrst ter njuno zatiranje. Varstvo vrtnin pred kapusovo sovko in zelenjadno sovko še vedno temelji zlasti na uporabi kemičnih insekticidov, čeprav je številčnost populacij omenjenih škodljivcev mogoče zmanjšati tudi z naravnimi sovražniki in ustreznimi agrotehničnimi ukrepi. S prepletanjem omenjenih ukrepov je namreč mogoče tudi ob močnem napadu pridelati zdrav in kakovosten živež.